Home / 25,645.70-38,399.04-13,307.78

Finding the Fourth Proportional to 25,645.70, 38,399.04 and 13,307.78

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Solution

The fourth proportional to 25,645.70, 38,399.04 and 13,307.78 is: 19,925.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,645.70 : 38,399.04 = 13,307.78 : x
  2. Step 2: Convert to fraction form
    25,645.70/38,399.04 = 13,307.78/x
  3. Step 3: Cross multiply
    25,645.70x = 38,399.04 × 13,307.78
  4. Step 4: Simplify right side
    25,645.70x = 511,005,976.53
  5. Step 5: Solve for x
    x = 511,005,976.53/25,645.70
  6. Step 6: Final answer
    x = 19,925.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.